Office chair



FIG. 1 shows a top perspective view of my design for an office chair;

FIG. 2 shows a bottom perspective view thereof;

FIG. 3 shows a right side view thereof;

FIG. 4 shows a front view thereof;

FIG. 5 shows a left side view thereof;

FIG. 6 shows a rear view thereof;

FIG. 7 shows a top plan view thereof; and,

FIG. 8 shows a bottom plan view thereof. 

The ornamental design for an office chair, as shown and described. 